import java.awt.*;
import java.awt.event.*;
import java.util.List;

public class Missile {
    public static final int XSPEED = 10;
    public static final int YSPEED = 10;

    public static final int WIDTH = 10;
    public static final int HEIGHT = 10;
    private boolean good ;

    private int x, y; Tank.Direction dir;
    //判断子弹是否活着
    public Missile(int x, int y, Tank.Direction ptDir, TankClient tc, boolean good) {
        this.x = x;
        this.y = y;
        this.dir = ptDir;
        this.tc = tc;
        this.good = good;
    }
    private boolean live = true; TankClient tc; public boolean isLive() {
        return live;
    }

    public Missile(int x, int y, Tank.Direction dir) {
        this.x = x; this.y = y; this.dir = dir;
    }

    public Missile(int x, int y, Tank.Direction dir, TankClient tc) {
        this(x, y, dir);
        this.tc = tc;


    }

    public void draw(Graphics g) {
        //如果没有活着，就从容器中去掉，并且不再画了
        if(!live) {
            tc.missiles.remove(this); return;
        }Color c =
                g.getColor();
        g.setColor(Color.BLACK);
        g.fillOval(x, y, WIDTH, HEIGHT);
        g.setColor(c);

        move();
    }

    private void move() { switch(dir) { case L:
        x -= XSPEED;
        break; case LU:
        x-= XSPEED; y -= YSPEED;
        break; case U:
        y-= YSPEED;
        break; case RU:
        x += XSPEED; y -= YSPEED;
        break; case R:
        x += XSPEED;
        break; case RD:
        x += XSPEED; y += YSPEED;
        break; case D:
        y += YSPEED;
        break; case LD:
        x -= XSPEED; y += YSPEED;
        break;
    }

        if (x < 0 || y < 0 || x > TankClient.GAME_WIDTH || y >


                TankClient.GAME_HEIGHT) {
            live = false;
            tc.missiles.remove(this);
        }
    }
    //getRect()可以正好拿到包在坦克外面的方块
    public Rectangle getRect() {
        return new Rectangle(x, y, WIDTH, HEIGHT);
    }
    public boolean hitTanks(List<Tank> tanks) {
        for(int i = 0; i < tanks.size(); i++) {
            if(hitTank(tanks.get(i))) {
                return true;
            }
        }
        return false;
    }
    public boolean hitWall(Wall w) {
        if(this.live &&
                this.getRect().intersects(w.getRect())) {
            this.live = false; return true;
        }
        return false;
    }
    //intersects可以判断这两个方块是否相交
//如果已经碰撞，那么就将子弹和坦克都设置为false

    public boolean hitTank(Tank t) {
        //System.out.println(this.getRect().intersects(t.getRect()));
        if(this.live && this.getRect().intersects(t.getRect()) && t.isLive() && (this.good != t.isGood()) ){
            //System.out.println("111111111111111111111");
            if(t.isGood()){
                t.setLife(t.getLife() - 20);
                if(t.getLife() <= 0) { t.setLive(false);
                }

            }else{
                t.setLive(false);
            }
            this.live = false;
            //在这里，以坦克的坐标来画这个爆炸
            Explode e = new Explode(t.getX(), t.getY(), tc);
            tc.explodes.add(e);

            return true;
        }
        return false;
    }
}